The route runs through rural residential areas before continuing into a mix of farmland and woodland with some homes, heading into East Mead Township.

PA 77 becomes unnamed and runs through more rural areas, passing through a corner of Woodcock Township prior to entering the borough of Blooming Valley.

The route passes south of Clear Lake and turns northeast onto Spring Street, running past more residences.

[2][3] PA 77 enters Concord Township in Erie County and turns north as Spartansburg Highway, running through more farmland and woodland with some residences.

The road runs through wooded areas with some fields and homes, passing to the west of Corry-Lawrence Airport as it crosses into the city of Corry.